We Found 2 Snakes Skins In A Shed In Harrison County, Ohio. They Went From 3' To 4' Long. They Were Both Together In A Shed In An Apartment Complex. It Has Light Brown Tan And White On It. What Are They?

There are children, dogs, and cats in this complex. We need to find out what it is, because the skins were in a hole that went into the crall space under the buildings. The skins were about the size of a quarter in diameter and the heads are oval. One skin was 3ft and the other was 4ft long.